So much so that she reposted the sexy photo on her own Instagram page.

In the image, Simpson, 18, and Hadid, 19, are completely naked except for a towel they're sharing, which is strategically wrapped around their privates. The two are so close to one another they are practically hugging. Hadid also has a towel in her hair, because why not?

Others were more supportive, with comments like "Absolutely gorgeous" and "Young model love :) So handsome."

As for Foster, she kept her caption sweet and simple with a heart and this description: "'Towel Series' by the extraordinary @MarioTestino @gigihadid @codysimpson #TowelSeries #MarioTestino."

Simpson and Hadid's image is the 69th photographer Mario Testino has captured for the series. Other celebrities who have participated include Ansel Elgort, Lily Aldridge, Sienna Miller, Miley Cyrus and Keira Knightley.